Buffer overflow in C-Ares
CVE-2016-5180
Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.086 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.086 · newest: 0.086 · change: 0.000
Affected products
- C-Ares — versions 1.0.0, 1.1.0, 1.2.0
- C-Ares Project — versions 1.11.0
- Node.js
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- source.android.com/security/bulletin/2017-01-01.html
- www.securityfocus.com/bid/93243 (vdb-entry)
- www.ubuntu.com/usn/USN-3143-1 (vendor-advisory)
- security.gentoo.org/glsa/201701-28 (vendor-advisory)
- www.debian.org/security/2016/dsa-3682 (vendor-advisory)
- c-ares.haxx.se/adv_20160929.html
- c-ares.haxx.se/CVE-2016-5180.patch
- googlechromereleases.blogspot.in/2016/09/stable-channel-updates-for-chrome-os.h…
- rhn.redhat.com/errata/RHSA-2017-0002.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-5180?
- CVE-2016-5180 is a critical-severity vulnerability in C-Ares, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2016-10-03.
- How severe is CVE-2016-5180?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-5180 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.